package cn.bsuc.crm.controller;

import cn.bsuc.crm.annotation.WebLog;
import cn.bsuc.crm.util.*;
import cn.hutool.core.util.RandomUtil;
import com.google.code.kaptcha.Producer;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * 验证码操作处理
 *
 * @author ruoyi
 */
@Api(tags = "验证码")
@RestController
@CrossOrigin
public class CaptchaController {
    @Resource(name = "captchaProducer")
    private Producer captchaProducer;

    @Resource(name = "captchaProducerMath")
    private Producer captchaProducerMath;

    @Resource
    private StringRedisTemplate stringRedisTemplate;


    // 验证码类型
    private String captchaType = "math";


    /**
     * 生成验证码
     */
    @ApiOperation("获取验证码")
    @GetMapping("/captchaImage")
    public Result getCode(HttpServletResponse response) throws IOException {

        // 保存验证码信息
        String uuid = IdUtils.simpleUUID();
//        String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
        String verifyKey = RedisConstants.LOGIN_CODE_KEY + uuid;


        String capStr = null, code = null;
        BufferedImage image = null;

        // 生成验证码
        if ("math".equals(captchaType)) {
            String capText = captchaProducerMath.createText();
            capStr = capText.substring(0, capText.lastIndexOf("@"));
            code = capText.substring(capText.lastIndexOf("@") + 1);
            image = captchaProducerMath.createImage(capStr);
        } else if ("char".equals(captchaType)) {
            capStr = code = captchaProducer.createText();
            image = captchaProducer.createImage(capStr);
        }

        //redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
        //redisUtil.set(verifyKey,code,60) ;
        stringRedisTemplate.opsForValue().set(verifyKey, code, RedisConstants.LOGIN_CODE_TTL, TimeUnit.SECONDS);
        // 转换流信息写出
        FastByteArrayOutputStream os = new FastByteArrayOutputStream();
        try {
            ImageIO.write(image, "jpg", os);
        } catch (IOException e) {
            return Result.failSys();
        }


        Map map = new HashMap();
        map.put("uuid", uuid);
        // map.put("img", Base64.getEncoder().encode(os.toByteArray())) ;
        map.put("img", Base64.encode(os.toByteArray()));
        return Result.ok(map);
    }
}
